Qtjist



P. mmnomsr. DETACHABLE PLOWSHARE EDGE.

APPLICATION FILED OCT. 30.1917- RENEWED MAR- 15. 1919.

1,307,790. Patented'June 2 1, 1919.

%MM'%W% PETER nueUEsr nonnonrsr, or OGDEN, UTAH.

Q DETACHABLE PLOWSHARE EDGE.

Specification of Letters Patent.

Patented June 245, 1919.

Application filed. October 30, 1917, Serial No. 199,322. Renewed March 15, 1919. Serial No. 282,964.

To all whom it may concern:

Be it known that I, PETER AUGUns'r Nonn- QUIST, a citizen of the United States, residing at Ogden,in the countyof Weber, State of Utah, have invented a new and useful Detachable Plowshare Edge; and I do hereby declare the following to be a full, clear, and exact description of the invention, such. as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to the art of plows, and more particularly to the share portion of a plow, and one of the objects of the invention is to provide an improved detach able share edge, which may be simply constructed and easily applied to the share, or may be readily removed for re-sharpening, thereby renewing the plow share.

A further object of the invention is the provision of a removable plow shareedge, which may be simply constructed from a single piece of sheet steel of suitable thickness and proportion, designed to be bent upon itself, then heated to "a welding heat and graduallydrawn into the shape shown and formed with a thin edge (which may be ground to a sharpened edge) by percussive blows at the point where the sheet metal is bent upon itself, thereby forming a detachable plow share edge having a V- shaped groove to receive the edge of the plow share, wherebythe detachable share edge may be secured to the share. a

A further object of theinvention is to provide simple means for securing said plow share edge to the share, consisting of apertures in the walls of the slot or groove of the edge, for the reception of wooden pins or pegs, which also pass through the edge portion of the share, and which pegs may be easily removed for detaching the plow share edge, and when re-applying the plow share edge, new pins or pegs, which may be constructed of any suitable wood, preferably hickory or dogwood, may be employed, and when the new pegs or pins are inserted or applied, they are constructed slightly tapering downwardly and ground off flush with the upper and lower surfaces of the share edge, thereby preventing accidental displacement of the pins.

In practical fields, the details of construction may necessitate alterations fall- 1ng within the scope of what is claimed.

The invention comprises further features and combinations of parts, as hereinafter set forth, shown in the drawings and claimed.

In the drawings Figure 1 is a view in perspective of a plow showing the improved detachable plow share edge applied to the share of the plow. Fig. 2 is a cross sectional View on line 22 of Fig. 1.

Fig. 3 is a plan view of a piece of sheet a in constructingthe plow share edge.

Fi 6 is a view inperspective, showing the s eet metal after having been bent longitudinally upon itself drawn partially into the sha e desired.

Fig. is a detail perspective view of the complete plow share edge in its finished condition and ready to be applied to the share.

Referring more especially to the drawings, a designates the plowas a whole, and which comprises the mold board Z), the share 0 and the detachable share edge d. The share 0 is of the conventional design and construction, as shown, but may be varied accordingly. The upper surface of the share (1 adjacent its edge, is provided with a cutaway portionorrecess 1, which extends the full length of the lower edge portion of the share, substantially from 2 to 3 said recess or cutaway portion conforming to theshape, as shown at 4 in Figsl. The detachable shareedge (Z is constructed from a single piece of sheet metal 5, as shown in Fig. 3. This piece of sheet metal, in cross section, is constructed thicker in its center longitudinally, shown at 6, than the edge parts 7, so thatwhcn the sheetmetal is bent longis tudinally upon itself, the share edge will have sufficient body and strength to withstandthe strain and work and the wear thereon. Where the piece of sheet metal is designed to be bent longitudinally on itself, the upper face of the sheet metal isscored slightly or provided with a slight longitudinal cut 8 V-shaped in cross section, to fasubjected to heat, suflicient for welding, shaping and drawing out purposes. The plow share edge, while in this heated condition, is gradually shaped, as shown at 9 in Fig. (5, until that portion 9 will assume the finished shape or contour 10, as shown in Fig. 7. While the share edge is being constructed or shaped in this manner, the fold or bend ll of the share edge is being drawn to a thin edge portion, as shown at 12 in F 7, by means of successive percussion blows. After obtaining the thin edge portion 12, the same may be suitably ground or otherwise machined, until said edge portion is brought to a sharpened condition, shown at 13 in Fig. 7, which discloses the finished detachable plow share edge. In constructing the plow share edge by bending the sheet metal longitudinally upon itself, a longitudinal groove or channel 14-, V-shaped in cross section, is formed longitudinally of the plow share edge, and which receives the V-shaped edge portion 15 of the plow share 0. Where this V-shaped edge portion or tongue 15 (which extends along the longitudinal edge of the share .0) projects downwardly and forwardly from the share, upper and lower undercut shoulders 17 and 20 are formed longitudinally of the share, so as to beengaged by the beveled longitudinal edges 20 of the upper and lower walls 20 and 16 of the V-shaped channel 14 of the plow share edge strip, so as to retain the upper and lower walls of said strip securely in place and prevent their spreading. By this construction of beveled edges of the plow share edge cutting strip and the under cut shoulders the strip is held. more rigid and securely in place. After constructing the plow share edge strip, the upper and lower walls are suitably drilled, at desired locations, to provide the registering apertures or perforations 18, which are slightly tapered. In other words, the apertures of the lower wall are smaller than the apertures of the upper wall, and the walls of both sets of apertures are axially tapered, for the reception of wooden pegs or pins 19, which are also tapered to properly and snugly fit the apertures, thereby securely and detachably securing the plow share edge to the share. These pins or pegs 19 may be constructed of any suitable wood, preferably hickory or dogwood, and are driven through perforations 18 of the edge portion of the share. By tapering the pins or pegs downwardly, in this manner, as shown, they are prevented from downward displacement. After the pins or pegs have been arranged, they are machined or cut oil flush with the upper or outer face of the plow share edge, and also flush with the under face thereof, thereby afi'ording smooth surfaces not having any obstructions, which would hinder the proper operation of the share in the soil. The forward end portion of the share is provided with a cutting edge 18, which is constructed at an acute angle tothe edge portion 18 of the share. By means of this cutting edge 18, which is straight, the share will cut easier and more eiiiciently into the soil, and more readily make way for the cutting edge 13, and consequently prolong the life of said cutting edge 13.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I declare that what I claim is The combination with a plow share, the lower contiguous edge having a longitudinally extending centrally disposed reduced extension tongue gradually tapered in cross section downwardly and forwardly, of a detachable plow share cutting strip having a cutting edge, the inner portion of said strip having a longitudinally extending recess correspondingly tapered in cross section with said tongue and adapted to receive said tongue, the upper and lower walls of the recess and the tapered tongue having registering tapered openings, tapered retaining pins in said registering openings, said plow share adjacent where the tongue projects therefrom having bevele'd undercut shoulders above and below the tongue and extending longitudinally, the inner edges of the upper and lower walls of the recess being oppositely beveled corresponding with and engaging the under cut beveled shoulders, whereby the plow share cutting strip may be additionally secured in place.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

PETER AUGUEST NonDQUIsT,

Witnesses MARY E. NORDQUIST, N. J. HANIR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, D. 0. 

